Alveoli: Understanding the Tiny Air Sacs in Your Lungs

The lungs are made up of millions of tiny sacs called alveoli. These sacs are lined with capillaries, which are tiny blood vessels. Oxygen from the air you breathe diffuses across the alveoli and into the capillaries. The capillaries then carry the oxygen-rich blood to your heart, which pumps it to the rest of your body.

Breathwork - Related Articles